lol, you sound like me when my friend asked me what a Toothless is (not knowing about the movie yet) so she came up to me and asked, "So, what exactly is this Toothless everyone's talking about?" And then there's my answer "HE'S A DAMN CUTE DRAGON IS WHAT HE IS!!!!"

If I had a dragon, or a dragon had me, I'd call her... (gotta be female- us girls stick togetha) ... .... ........................ ......

Whisper or Raeika or Menoda or Yemika or Tandin or Uta or Shadow Ghost or Pamenika or Trista or Nadem or Kamika or Flow or Ebony or Ivory (depending on the colour) or Lilica or Kemba or Fear or Mystica or Silea or ...

I came up with those in five minutes and all Cresida Cowell could come up with is "Toothless"??? (Cresida Cowell: author of the origonal books in which Toothless was a "common or garden dragon" with no teeth) Thinking about that, It's quite a logical name...